A single large boiled egg contains about 6.3 grams of protein. That makes eggs one of the most protein-dense foods per calorie, packing that protein into just 78 calories. The exact amount varies by egg size, and the protein splits unevenly between the white and the yolk.
Protein by Egg Size
Eggs sold in stores range from small to jumbo, and the protein content scales with weight. Here’s what you get from one boiled egg at each size:
- Small (38 g): 4.79 g of protein
- Medium (44 g): 5.54 g of protein
- Large (50 g): 6.3 g of protein
- Extra large (56 g): 7.06 g of protein
- Jumbo (63 g): 7.94 g of protein
Most nutrition labels and recipes assume a large egg. If you buy extra large or jumbo eggs, you’re getting roughly 10 to 25 percent more protein per egg, which adds up if you eat eggs regularly.
How Protein Splits Between White and Yolk
People often assume all the protein lives in the egg white, but that’s not quite right. In a large egg, the white contributes about 3.6 grams of protein and the yolk contributes the remaining 2.6 grams. That means the yolk holds roughly 40% of the egg’s total protein.
The white is mostly water and protein with almost no fat. The yolk carries fat, cholesterol, and most of the egg’s vitamins and minerals alongside its share of protein. If you’re eating only egg whites to cut calories, you’re losing nearly half the protein along with all the fat-soluble nutrients.
Why Egg Protein Is High Quality
Protein quality depends on the mix of amino acids a food provides. Eggs contain all nine essential amino acids in proportions your body can use efficiently, which is why they’ve long been treated as a reference protein in nutrition science. A single large egg delivers about 540 milligrams of leucine, the amino acid that plays the biggest role in triggering muscle repair and growth after exercise.
Your body absorbs cooked egg protein more efficiently than raw egg protein. Cooking unfolds the proteins and makes them easier to digest. Studies have shown that your body absorbs over 90% of the protein in a cooked egg, compared to roughly 50% from a raw one. Boiling doesn’t reduce the protein content in any meaningful way compared to frying or poaching.
How Many Eggs to Hit Your Protein Goals
If you’re aiming for 20 to 30 grams of protein per meal (a common target for muscle maintenance and satiety), you’d need three to five large boiled eggs to get there on eggs alone. That’s practical for some meals but not all, which is why eggs work well as a protein supplement to other foods rather than carrying the full load at every meal.
Two large boiled eggs give you about 12.6 grams of protein, roughly equivalent to a cup and a half of milk or two tablespoons of peanut butter. For a quick breakfast or snack, two eggs paired with a slice of whole grain toast and a glass of milk gets you comfortably past 20 grams.
Boiled eggs are especially convenient for meal prep since they keep in the refrigerator for up to a week with the shell on. That makes them one of the easiest ways to have ready-to-eat protein available without any cooking in the moment.